+ return ACCESSION_REGEX;
+ }
+
+ @Override
+ protected EnsemblFeatureType[] getFeaturesToFetch()
+ {
+ return FEATURES_TO_FETCH;
+ }
+
+ /**
+ * Answers true unless the feature type is 'transcript' (or a sub-type in the
+ * Sequence Ontology).
+ */
+ @Override
+ protected boolean retainFeature(SequenceFeature sf, String accessionId)
+ {
+ if (isTranscript(sf.getType()))
+ {
+ return false;
+ }
+ return featureMayBelong(sf, accessionId);
+ }
+
+ /**
+ * Answers true if the sequence feature type is 'exon' (or a subtype of exon
+ * in the Sequence Ontology), and the Parent of the feature is the transcript
+ * we are retrieving
+ */
+ @Override
+ protected boolean identifiesSequence(SequenceFeature sf, String accId)
+ {
+ if (SequenceOntologyFactory.getInstance().isA(sf.getType(),
+ SequenceOntologyI.EXON))
+ {
+ String parentFeature = (String) sf.getValue(PARENT);
+ if (("transcript:" + accId).equals(parentFeature))
+ {
+ return true;
+ }
+ }
+ return false;